Self-adjusting polish-rod packing.



No. 760,313. PATENTED MAY 17, 1904:. n.0RooKER. SELF ADJUSTING POLISH Ron PACKING.

APPLIOATION FILEDNOV. (i, 1903, H0 MODEL. 2 SHEETS-SHEET L WTE. jc

No. 760,313. PATBNTBD MAY 17, 1904.

D. GROGKBR.

SELF ADJUSTING POLISH ROD PACKING.

APPLIUATION FILED Nov. e. 190s.

l 2 SHHETB-SHEBT 2. D: :1.4.

.N0 MODEL.

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UNITED STATES Patented May 1'?, 19Q4. 4

PATEN *1 OEEICE.

DAVID OROOKER, OF SANDYLAKE, PENNSYLVANIA, ASSIG-NOR OF ONE- HALF TO`WILLIAM H. UNBEHAUN, OF FRANKLIN, PENNSYLVANIA.,

SE LF-ADJUSTING POLISH-ROD PACKING.

SPECIFICATION forming part of Letters Patent No. 7 60,313, dated May 17, 1904:.

, Application iiled November 6, 1903. Serial No. 180,139. (No model.)

To all whom 2125 may concern:

Be it known that I, DAVID Onoennn, residing at Sandylake, in the county of Mercer and State of Pennsylvania, have invented a new and Improved` Self Adjusting Polish Rod Packing', of which the following is a specification.

My invention seeks to provide an improved rod-packing' of that class wherein two opposing sections are arranged to be adjustably moved one within the other whereby to properly compress the packingmembers when they become worn by the reciprocation of the rod therebetween; and primarily my invention has for its object to provide an appliance of the character stated of a simple and economical construction in which the several parts are especially designed to effect a close conforming of the packing around the rod and selfadjusting, whereby the packing is maintained in the desired contact with the rod or shaft at all times to afford a continuous unbroken bearing-surface around the rod or shaft, said special design or arrangement of parts constitutingmy appliance being also such as to admit of the ready removal of the packing members when worn out and the substitution of new packing members.

In its more subordinate features my invention consists in certain peculiar arrangements and novel combination of parts, all of which will be hereinafter fully described in detail, and speciiically pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of my improved rod-packing applied to the piston rod or shaft, parts being broken away to illustrate more clearly the internal construction. Fig. 2 is a transverse section of the same on the line 2 2 of Fig. 5. Fig. 3 is a similar view on the line 3 3 of Fig. 5. Fig. 4: is a side elevation of the same attached to acylinder-head. Fig. 5 is a longitudinal section of the packing devices and the rod or shaft operable therein. Fig. 6 is a detail view of the statonary packing-ring sleeve bearing or seat. Fig. 7 is a similar view of the opposite or fol- Fig. 8 is a detail view of one which forms the nipple portion, having its outer end threaded externally, as at 2, to engage the internally-threaded end l of the section 1, and the nipple-section 2 has the usual threaded end 2b for connecting withthe cylinder-head (indicated by 3 in the drawings) or such other body through or within which the rod Il operates, and the said member 2 also has the usual wrench-receiving portion 2c and the piston or rod aperture 2l in the inclosed end 2, as shown. The section or cap member 1 has the usual aperture Ih and the wrench-receiving portion lem its solid end,

and` in my improved construction it is also formed with a seat lI on the inner face of the solid end that surrounds the aperture l to receive the flat base 5*L of the bearing-sleeve i.

5, the outer end of which terminates with the head 5, having a concaved seat 5c to snugly bear against the packing-ring 6, and the, said head 5b is of sufficiently less diameter than the diameter of the member 2, into which'it projects, to allow for a free endwise adjustment of the open end of the member 2 between it and the threaded end of the cap member l, as clearly shown in Figs. l and The nipple member 2 is also provided with a fiat seat that surrounds its rod -apertureto receive one end of the stout coil or cushion spring 7,

the outer end of which encircles and bears against a follower-sleeve 8, which opposes the bearing-sleeve 5 and in conjunction with the sleeve 5 clamps and compresses the packingrings.

The sleeve 8 includes a short hub 8,

which projects within the spring 7, and the head 8, that has the concaved seat 8" toreceive the packing-ring 6a.

In the practical arrangement of my invention a suitable number of packing-rings is provided, and each of the rings is of a diameter to snugly fit within the smooth barrel portion of the nipple member 1 and which ring is suitably apertured to snugly fit upon the rod 4:. In the drawings I have shown three packingrings, two end rings 6 and 6a and the center ring 6b; but I desire it understood that a plurality of center rings ma-y be used as conditions may make desirable. The center rings are ordinary flat disks; but the end rings 6 and 6 have their outer faces, that bear against their respective bearing members 5 and 8, convexed to snugly bear against the concaved seats of the rings 6 and 6a, and all of the said rings are formed from any suitable or wellknown compressible material.

From the foregoing, taken in connection with the accompanying drawings, it is believed the complete construction, advantages, and the operation of my improved packing appliance will be readily apparent to those skilled in the art to which it appertains.

I am aware that packing' means of the same general character above referred to have been provided in which is included a nipple portion and cap which engages the nipple and means within the nipple and cap for compressing the packing-rings.

My invention, so far as I know, differentiates from what has heretofore been provided in this art in the peculiar manner in which the nipple and cap members adjustably connect the opposing bearing-sleeves 8 and 5 and the special cooperation of the said sleeve with the peculiarly-arranged packing-rings and the nipple and the cap members.

By providing the peculiarly constructed sleeves 5 and 8 the sleeve 5, by reason of its flat base and its head portion, is held solid above as against the packing-rings and the base of the cap, whereby it is supported in a fixed position relative to the rod 4 to relieve the rod from frictional contact therewith, and the sleeve 8 is likewise held above the ring 6 and the spring 7. Again, by reason of the flat-spring packing-ring and the convex or disk outer ring 6 and 6 and the concaved seat on the bearing-head of the sleeves 8 and 5 when endwise pressure is applied to the compressible rings they are expanded radially, and thereby caused to come in a tight frictional bight both as against the rod and the barrel of the member 2. To replace the rings, it is only necessary to uncouple the cap from the nipple and remove the head 5, when access can be had to the rings 6 and 61.

Having thus described my invention, what I claim, and desire to secure by Letters Patent` is- 1. In a packing as described in combination with an axially-disposed rod, a nipple or barrel member externally threaded at its open end andV provided with a rod-aperture in its solid end, and a bearing surrounding said aperture, a cap adjustably attached to the threaded end of the barrel member provided with a rod-aperture in its solid end and having a bearing portion surrounding the said aperture, a sleeve loosely mounted upon the shaft and supportable within the barrel out of direct engagement with the rod, a Second sleeve supportable within the barrel member out of engagement with the rod, packingrings mounted on the rod between the two sleeves, a spring interposed between the second sleeve and the solid or bearing portions of the barrel or nipple member, as set forth.

2. The hereinbefore-described packing appliance, comprising the following elements in combination; a barrel member adapted to be attached to the body in which the rod reciprocates, said barrel member having a rodaperture in its solid end, and an integrallyformed internal bearing-surface surrounding said aperture, a cap member adjustably attachable to the barrel member having a rodaperture in its solid end, and an integrallyformed internally-flat bearing-surface surrounding said aperture, the sleeve 5 having a flat base to engage the fiat bearing-surface of the cap and having a head 5 of less diameter than the barrel member within which it projects, said sleeve 5 being held within cap and barrel out of direct engagement with the rod upon which the packing appliance is mounted, said sleeve-head 5u having a concaved bearingseat, the coiled spring 7 bearing at one end against the solid portion of the barrel member, the follower-sleeve 8 said sleeve including a hub that projects into the outer end of the coil-spring 7, and a head portion 8a provided with a concaved seat, and a series of packing-rings held between the two sleeves aforesaid, the outermost ones of said rings having convexed faces to engage the con caved seats in the sleeves, all being arranged substantially as shown and described.

3. The hereinbefore-described packing appliance, comprising the following elements in combination; a barrel member adapted to be attached to the body in which the rod reciprocates, said barrel member having a wrenchreceiving portion, said barrel member being externally threaded and having a rod-aperture in its solid end and an integrally-formed internal bearing-surface surrounding said rodaperture, a cap member adjustably attached to ,the barrel member and having its end formed with a nut portion, said end also having a rod -aperture, said cap member being internally threaded and provided with a seat and an internal iiat bearing-surface surrounding said rod-aperture in the cap member, a sleeve 5 having a fiat base to engage the fiat bearing-surface of the cap Iand rest in said IIO IIS Y cap-seat, said sleeve 5 also having a head 5 hub poi-tion 8fL provided with a concave seat of less diametei` than the member Within and a series of packing-rings held between which it projects, said sleeve 5 being held the two aforesaid sleeves, the outermost ones within said cap and barrel out of direct cnof said rings having convexed faces to engage IS 5 gagement with the rod upon which the packthe concave seats in the Sleeves for the puringl appliance is mounted, said sleeve-head 5; poses specified. having a concave bearing-seat, coi dspring v bearing at one end against the solid portion DAVID CROGKER of the barrel member, the followewsleeve 8 Witnesses:

1 O said sleeve including a hub that projects into E. D. YATES, the outer end of the coil-spring 7, and the W. J. POND. 

